Lumber-truck.



JI. A. MGGRRY;

Patented en 15, 1912.

Joran A. MGGARRY, or CHICAGO, ILLINOIS.

" LUMBEReTRUCK.

Specification of Letters Patent.

' Patentedot. 15,1912.

Application iledJanuary 11, 1911. Serial No. 601,955.

'lb all whom. i may concern:

Be it ltnown that I, JOHN A. MCGARRY, a citizen of the United States, residing at Chi# cago, in the county of Cook and State of lllinois, have invented a.' certain new and useful improvement. in Luniberfrucks, of which the following is a specification.

My invention relates to infiprovements in trucks or loading platforms and the like,

. and. is illustrated diagraniinaticallg.y in one forni in the accompanying drawing, whereinllig'ure l. is a. side elevation, Fig. 2, a plan view, Fig. 3, a detailed section along the line 3-3 of Fig. 2.

Qf lilte parte are indi ated by like letters in allthe ligar-es.

rllie main frame A which may be mounted on the springs Al and wheels A2 of an automobile trucl; as indicated, carries the transverse members lig ar 1anged in parallel pairs supporting the platform A* and carrying between their en ds the bearings A5. The rollers i3 are located between adjacentmembers are mounted upon the shafts B1 and are supported intermediate their ends by the rollers B2 and at their ends by the bear-- ings A5 which support the shafts B1. rlhe sha-fs B1 are provided at either end with the sprockets B8 carrying the chains Band one end of one of the shafts B1 carries the gear B5 in engagement with the pinion BG on the cranlr shaft B7. The plat-form terminates at one end in one of the rollers B on e', other side of which is located the rear. .ifardly and downwardly7 extending apron which extends outwardly and downwardly beyond `the end of the. main frame A.

ltwill 'be evident that while I have shown in my drawing an operative. device, still many changes might be made in size, shape and arrangement of partswithout departing materially from the spirit of my invention. lllor instance, the platform might be mounted upon an ordinary wagon truck or even upon fixed supports and I wish therefore, that my drawings are regarded as in a sense diagrammatic. A

rlhe use and operation of my invention are as follows: lllaterial such as lumber is loaded upon the. truck or plat-form being supported by the rollers and held thereon in position and shape in the usual manner. TWhen 1t is desired to tranship the load, the truck'i's backed up to a similar plat-form or is brought end to end with a similar wagon.I '.lheerank is then turned and the rollers are rotated and the entire load passes olf intact on to the other set of rollers and there it may be locked in position and the truck will then operate in the usual manner. This process may be continued and transliipment without breakage of bulk may be made any num ber of times at the will of the operator. Then the load is to -be discharged upon the groundl or any surface below the level of the truck platform, the rollers are operated until the load is carried backward to a point where it overbalances and one end falls upon the ground. The engine is then started and the wagon drawn from under the load, the load being supported by the rear roller of the wagon and the ground. As the rear roller passes forward to the end of the load, the end will leave the roller and slide down upon the downwardly inclined apron and be allowed to drop to the ground without damage to the wagon frame or platform.v i f lt will be evident that in the caseof rigid loads or 'materials the platform might be. dispensed with but where light lumber is being carried the load is liable to sag be tween the rollers and if it does this, it will slide along the platform until it reaches the next roller and being guided by the platform will ride upwardly along its face.

The'process above described, wherein aload of lumber or the like is trans-shipped in bulk from one platform to another, may, it is quite evident, be performed with any suitable apparatus, although preferably with the apparatus above indicated. It might be moved from one automobile truck to another, or from one automobile truck to a wagon or plat-form. One embodiment of my idea and the process is found in connection with lumber yards where gasolene propolled vehicles'are not allowed to go. 1Where this is the case, the lumber would be loaded on a wagon identical with the one shown in my drawing, and would then be hauled to that part of the yard where theautomobile truck was. The load would then be placed upon the truck by turning a vcranlt to rotate the rollers and the automobile would deliver the load. Meanwhile the'wag'on would again bel filled. Thus my invention resides both in the precise preferred form indicated andv also in the proces'sldescribed.

'i claim: l The V'combination with a truck of a slotted 4platform thereon, theslots in seid platformA the remainder to remake.them1m unison, lsaid being transversely disposed, load carrying rollers being supported ateither en d and 10 v A rollers rotatably mounted on the platform at points intermediate-.their two ends.`

supports andlocated in the slotsythe upper edges of the' rollers .projecting slightly above the levelofthe platform, means tor rotating Witnesses: f one of'said rollers and connecting means in- FRANCIS PARKER, J r.,

JOHN A'. MCGARRY.

terposed between said driven roller and all MINNIE M.LINDENAU.- 

